# NTSB investigations: Lycoming VO-540 series: Loss of engine power(total) - mech failure/malf NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB SEA02LA073](https://openairdocs.org/ntsb/SEA02LA073.md): Hiller UH-12E · Goshen, OR · Accident · No injuries · Limited investigation · Final report · Apr 22, 2002 · N3004T · Substantial damage > The failure of company maintenance personnel to identify and replace/repair the degraded exhaust stack. Contributing factors were the mis-rigged carburetor heat control and the pilot's failure to maintain appropriate rotor RPM. Additional contributing factors… - [NTSB FTW94LA210](https://openairdocs.org/ntsb/FTW94LA210.md): Hiller UH-12L4 · West Helena, AR · Accident · No injuries · Limited investigation · Final report · Jun 22, 1994 · N90453 · Destroyed > A total loss of power due to a leak in the main fuel line which occurred as a result of an electrical short which burned a hole in the fuel line. Factors were a failure by the pilot to perform recommended maintenance and the lack of suitable terrain for a… - [NTSB ATL90LA138](https://openairdocs.org/ntsb/ATL90LA138.md): Bell BH-47G · Seagrove, NC · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 1990 · N3081G · Substantial damage > Failure of a number four connecting rod bolt for an undetermined reason. - [NTSB LAX90DVA01](https://openairdocs.org/ntsb/LAX90DVA01.md): Hiller 12E · Huron, CA · Accident · Serious injuries · Final report · Oct 16, 1989 · N4026G · Substantial damage > The pilot failed to properly preflight the airplane before departing on the accident flight and misjudged the flare during the ensuing autorotation. Factors relating to this accident were oil starvation and total failure of the connecting rod. - [NTSB LAX90DUJ03](https://openairdocs.org/ntsb/LAX90DUJ03.md): Hiller UH-12E · Yuma, AZ · Accident · Serious injuries · Final report · Oct 11, 1989 · N689SB · Substantial damage > The pilot misjudged the flare altitude. Contributing to this accident was the failure of the engine torsional coupling which ultimately caused the total loss of power. - [NTSB MIA88LA183](https://openairdocs.org/ntsb/MIA88LA183.md): Hiller UH-12E · Gretna, FL · Accident · No injuries · Limited investigation · Final report · Jun 1, 1988 · N4029R · Substantial damage > While on an aerial application flt, the plt stated he maneuvered the helicopter to release the remaining chemical. He then heard a loud 'screeching' noise followed by silence as the eng quit. The helicopter landed hard breaking the skids. It came to rest on… - [NTSB LAX87DVD01](https://openairdocs.org/ntsb/LAX87DVD01.md): Bell 47G4A · Stockton, CA · Accident · Serious injuries · Final report · Feb 2, 1987 · N28938 · Substantial damage > Just after takeoff, the engine experienced a power loss while transporting agricultural equipment. A fractographic examination of the failed fuel disconnect fitting by anamet laboratories, concluded that approximately 70% of the retaining ring on the fuel… - [NTSB LAX86FVM06](https://openairdocs.org/ntsb/LAX86FVM06.md): Hiller UH21E · Salinas, CA · Accident · No injuries · Final report · Aug 12, 1986 · N169HA · Substantial damage > The plt experienced a 'ratcheting' to the right and a decrease in rotor RPM during cruise flt at 75-100 ft AGL. The plt made an autorotation but could not cushion the landing due to the low alt and lack of rotor RPM. The helicopter impacted hard and… - [NTSB LAX85FA132](https://openairdocs.org/ntsb/LAX85FA132.md): Hiller UH12E · Five Points, CA · Accident · Minor injuries · Field investigation · Final report · Feb 3, 1985 · N5323V · Substantial damage > While performing an ag flight the helicopter's engin suddenly lost power. At the time the aircraft was near its max allowable gross weight and it was between 3-5FT AGL. As the aircraft yawed left and descended. The pilot in command attempted to land on a… - [NTSB ATL83LA160](https://openairdocs.org/ntsb/ATL83LA160.md): Bell 47G-4A · Charleston, WV · Accident · No injuries · Limited investigation · Final report · Apr 13, 1983 · N4749R · Substantial damage > During an approach to land, the engine lost power at aprx 500 ft AGL. The plt reported that during an autorotative landing, he had to maneuver to avoid trees & a ridge in order to land in a suitable area. During this time, rotor RPM dropped & a crash landing… - [NTSB LAX82FA245](https://openairdocs.org/ntsb/LAX82FA245.md): Hiller UH-12L3 · Stockton, CA · Accident · No injuries · Field investigation · Final report · Jul 1, 1982 · N86689 · Substantial damage > The pilot reported that the engine lost power at about 5 ft AGL as he was taking off from a trailer. He turned to avoid a gas and water tank near the poll truck. The helicopter came to rest, right-side-up, but was damaged. A fuel leak was found in a line that… ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41534', '41582') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 351)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=41534&occurrence=351 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.